Compare software

Inbox When ReadyHEY
Freemium

Free to install, with a paid PRO upgrade and team plans.

 Paid

Paid subscription service.

Browser extension Web
  • Lets you search and compose without seeing new mail
  • Available for Chrome, Firefox and Edge
  • Screens first-time senders before they reach the inbox
  • Email and calendar from one provider
  • Works only with Gmail
  • Some features require the paid PRO upgrade
  • Opinionated workflow that differs from traditional email
  • Hosted service that requires a paid account
Browser extension Web application, Hosted service
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.